Interrupted Sentence Structure

Placing a modifier between the subject and the verb or
between the verb and the direct object can weaken the
structure of the sentence and make the sentence difficult to interpret. In
general, the longer and more complicated the modifier, the more it weakens the
sentence. Although you can often get away with interrupting the structure of the
sentence with a short (one-word) modifier, adding a longer modifier significantly
worsens the sentence.

Weak

The heron, egret, and stork colonies in Everglades National Park that once
each contained tens of thousands of birds whose bustling extravagance helped
inspire the founding in 1905 of the National Association of Audubon Societies
(later the National Audubon Society) have shrunk by 95 percent since the
1930s.

Improved

The bird colonies in Everglades National Park once each contained tens of
thousands of birds whose bustling extravagance helped inspire the founding in
1905 of the National Association of Audubon Societies (later the National Audubon
Society). These colonies of herons, egrets, and storks have shrunk by 95 percent
since the 1930s.